D.C. Mun. Regs. tit. 14, r. 14-803
In each multiple dwelling where the occupants of habitations are responsible for taking the ashes, garbage, or refuse from their respective quarters to a place of common storage or disposal, the place of common storage or disposal shall be readily accessible to all occupants at all times through common space within the premises.
In multiple dwellings where the owner or licensee is responsible for the collection or removal of ashes, garbage, or refuse from the individual habitations to a place of common storage or disposal, the owner or licensee shall cause sufficient daily collections, at an hour to be specified by the owner or licensee, to be made as may be necessary to keep the common space of the premises free from any accumulation of ashes, garbage, or refuse.
The principal occupant of a single or two-family dwelling, and the owners or licensees of multiple dwellings, shall provide and maintain water-tight metal receptacles with tight-fitting metal covers sufficient for the separate storage of all ashes, garbage, or refuse accumulating on the premises during the usual interval between collections of the ashes, garbage, and refuse.
If residential buildings are provided with interior refuse storage bins, the variety and number of those metal receptacles may be modified accordingly.
Persons required by this section to provide and maintain storage receptacles shall keep them free of accumulated grease, filth, or insect breeding, and shall keep them in a clean condition.
D.C. Mun. Regs. tit. 14, r. 14-803